Another gravity-defying stocking filler, the Stand Flexicharge consists of a tough cable which not only charges a smartphone but can be positioned to display your device where you need it. Connected via USB, the gadget is suitable for computers and vehicles with a USB-32 pin connector.

Price: £10.45 ($16)

Purchase: Genie Gadgets

The Tablet Tux Tuxedo tablet cover is a cute product that will stretch across most tablets. The cover, made from neoprene, will stop scratches from ruining your tablet's screen. It's not as durable or strong as some others on the market, but certainly has a personality.

Price: £8.99 ($14)

Purchase: Iwantoneofthose

If you want a cover which is a bit more sober, this leather slip cover -- suitable for the iPad 2, 3, 4, Air and Air 2 -- is a simple but classic design made from Indian leather.

Price: £14.99 ($23)

Purchase: Iwantoneofthose

The AmazonBasics 4.0 amp dual USB car charger is a useful item for those who travel often. You can charge two devices simultaneously while in your car, and the charger is compatible with Apple, Android and Amazon Fire Phone power cables.

Purchase: Amazon

The Selfie, the popular but somewhat annoying trend across social media to take self-made smartphone portraits, has entered the commercial realm. The Selfie stick is a portable tripod of sorts which can be turned to help you create shots without needing to keep your hands on your smartphone.

Price: £6.95 ($10)

Purchase: Red5

If you want to share a video or song playing on your mobile device, the easiest way to do so is to share a pair of earphones with your friend. However, the Jack Rabbit headphone splitter means you can both enjoy a full audio experience -- by placing two sets of headphones in the same jack. Simple, but a functional gift.

Price: £6.95 ($10)

Purchase: Prezzybox

An unusual but fun gift for the kids, the iPhone Doodle Case -- suitable for 4/4S & 5 iPhone models -- contains a black marker pen and clear case for the owner to create their own designs. Once scribbled on, the ink dries, and if you become bored with your design or make a mistake, the solution provided can be used to clean the case and start again.

Price: £9.45 ($15)

Purchase: Genie Gadgets

As an owner of a Nuvango skin, which was a gift, I can recommend the website as a source for unusual, artistic covers designed for tablets and smartphones. You can find anything from well-known artwork to geeky, tech-related icons, and pricing is reasonable.

Price: $various

Purchase: Nuvango

The Veho Pebble Smartstick is a small, 2200mAh emergency charger for mobile devices. It is small and light enough to throw in your bag and forget about, but can prove invaluable if you run out of juice on the road.

Price: £9.99 ($15)

Purchase: Iwantoneofthose

Available for pre-order ahead of Christmas, this inexpensive cardboard structure acts as a projector for media on your smartphone. Thanks to a glass lens embedded within, you can project films and clips from your smartphone on to a wall. However, of note is that the projector is not compatible with larger mobile devices, such as Apple's iPhone 6.

Price: £15.99 ($25)

Purchase: Firebox

A fun stocking filler, Quarkie's snake eye earphones stand out from the crowd.

Price: £6.99 ($11)

Purchase: Iwantoneofthose

Suitable for those who travel often and need access to their phones with as little distraction as possible, the iMagnet dashboard mount is a universal stand which uses suction to hold on to most surfaces -- including car dashboards. Once in place, hold the smartphone just above the mount and the device will magnetically stick.

Price: $24.99

Purchase: Amazon

Another mount, but more versatile than suction-based products, is the Rocketfish PadPivot. You can turn the mount 360 degrees along with horizontal or vertical viewing -- suitable for any number of scenarios, and so makes a versatile gift or stocking filler.

Price: $17.65

Purchase: Amazon